221411434 has 8 divisors (see below), whose sum is σ = 351653508. Its totient is φ = 104193600.

The previous prime is 221411431. The next prime is 221411447. The reversal of 221411434 is 434114122.

It is a happy number.

221411434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 213306025 + 8105409 = 14605^2 + 2847^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (221411431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3256017 + ... + 3256084.

Almost surely, 2^221411434 is an apocalyptic number.

221411434 is a deficient number, since it is larger than the sum of its proper divisors (130242074).

221411434 is a wasteful number, since it uses less digits than its factorization.

221411434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6512120.

The product of its digits is 768, while the sum is 22.

The square root of 221411434 is about 14879.9003356877. The cubic root of 221411434 is about 604.9693165688.

Adding to 221411434 its reverse (434114122), we get a palindrome (655525556).

The spelling of 221411434 in words is "two hundred twenty-one million, four hundred eleven thousand, four hundred thirty-four".